Results 1 to 10 of about 12,901,041 (346)
Scaling Properties of Galaxy Groups [PDF]
Universe, 2021 Galaxy groups and poor clusters are more common than rich clusters, and host the largest fraction of matter content in the Universe. Hence, their studies are key to understand the gravitational and thermal evolution of the bulk of the cosmic matter ...
Lorenzo Lovisari +3 more
doaj +2 more sources
Feedback from Active Galactic Nuclei in Galaxy Groups [PDF]
Universe, 2021 The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. The cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic nuclei ...
Dominique Eckert +4 more
doaj +2 more sources
Galaxy-galaxy weak-lensing measurement from SDSS: II. host halo properties of galaxy groups [PDF]
Astrophysical Journal, 2017 As the second paper of a series on studying galaxy-galaxy lensing signals using the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we present our measurement and modelling of the lensing signals around groups of galaxies.
Fu, Liping +12 more
core +4 more sources
Evolution of galaxy groups in the Illustris simulation [PDF]
, 2016 We present the first study of evolution of galaxy groups in the Illustris simulation. We focus on dynamically relaxed and unrelaxed galaxy groups representing dynamically evolved and evolving galaxy systems, respectively.
Dariush, Ali A. +2 more
core +3 more sources
From Halos to Galaxies. VI. Improved Halo Mass Estimation for SDSS Groups and Measurement of the Halo Mass Function [PDF]
The Astrophysical JournalIn ΛCDM cosmology, galaxies form and evolve in their host dark matter (DM) halos. Halo mass is crucial for understanding the halo–galaxy connection. The abundance-matching (AM) technique has been widely used to derive the halo masses of galaxy groups ...
Dingyi Zhao +20 more
doaj +2 more sources
Quantifying the role of ram pressure stripping of galaxies within galaxy groups [PDF]
Monthly notices of the Royal Astronomical Society, 2022 It is often stated that the removal of gas by ram pressure stripping of a galaxy disk is not a common process in galaxy groups. In this study, with the aid of an observational classification of galaxies and a simple physical model, we show that this ...
Tutku Kolcu +3 more
semanticscholar +1 more source
The Resolved Sunyaev–Zel’dovich Profiles of Nearby Galaxy Groups [PDF]
, 2021 Many of the baryons in galaxy groups are thought to have been driven out to large distances (≳R 500) by feedback, but there are few constraining observations of this extended gas.
Cameron T. Pratt, Zhijie Qu, J. Bregman
semanticscholar +1 more source
Hunting for the host galaxy groups of binary black holes and the application in constraining Hubble constant [PDF]
, 2020 The discovery of gravitational-wave (GW) signals, produced by the coalescence of stellar-mass binary black holes (SBBHs), opens a new window to study the astrophysical origins and dynamical evolutions of compact binaries. In addition, these GW events can
Jiming Yu, Yu Wang, Wen Zhao, Youjun Lu
semanticscholar +1 more source
Investigating the Dominant Environmental Quenching Process in UVCANDELS/COSMOS Groups
The Astrophysical Journal, 2023 We explore how the fraction of quenched galaxies changes in groups of galaxies with respect to the distance to the center of the group, redshift, and stellar mass to determine the dominant process of environmental quenching in 0.2 < z < 0.8 groups.
Bonnabelle Zabelle +38 more
doaj +1 more source
The Astrophysical Journal, 2023 We use the DR9 of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass M _h ≥ 10 ^12 M _⊙ and redshift 0.01 ≤ z ≤ 0.08, down to a limiting r -band magnitude of M _r = −10 to −
Jiacheng Meng +5 more
doaj +1 more source